My Car will not start, the starter keeps going but it is not firing up on 1991 Mercedes-Benz 560SEC

i used starter Spray it seems to start but it cuts off it seems that fuel is not getting to engine can it be a fuel pump or some thing like that

It could be the fuel pump or the fuel pump relay. I have replaced several fuel pump relays on this vintage Mercedes. Best to have a shop Diagnose this as the problem, because it could be something else.

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Most likely is fuel pump relay - so much so that I carry a spare in both my 560s